package com.bjpowernode.struts;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

public class CalAction extends Action {

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
		
		CalActionForm calform = (CalActionForm)form;
		int value1 = calform.getValue1();
		String flag = calform.getFlag();
		int value2 = calform.getValue2();
		
		int result = 0;
		try{
			if("+".equals(flag)){
				result = value1 + value2;
			}else if("-".equals(flag)){
				result = value1 - value2;
			}else if("*".equals(flag)){
				result = value1 * value2;
			}else if("/".equals(flag)){
				result = value1 / value2;
			}
			request.setAttribute("result", result);
			return mapping.findForward("success");
		}catch (Exception e) {
			e.printStackTrace();
		}
		return mapping.findForward("error");
	}

}
